Sourcing the right 30202 bearing isn't just about matching dimensions. It's about handling radial and axial loads in real-world conditions without unexpected downtime. We've supplied thousands to US importers over the years, watching them tackle everything from truck axles to conveyor setups.

At YIDI Motion, we pull from our Hebei factory stock—15mm ID, 35mm OD, 11mm width standard metric taper. But it's the heat treatment and precision grinding that separate reliable units from the cheap imports that fail early.

What Exactly Is a 30202 Bearing?

Start with the basics. The 30202 is a single-row tapered roller bearing, ISO 355 class. Inner ring 15mm bore, outer diameter hits 35mm, assembly width 11mm. It's designed for combined loads—radial forces plus axial thrust in one direction.

Picture a heavy-duty gearbox or front wheel hub on a delivery truck. Those spinning under 14,000 RPM limits, with dynamic load ratings around 15.8 kN. We've seen them spec'd in agricultural harvesters too, where vibration and dirt are constants.

Not all 30202s perform the same. Low-end units from unverified mills use inconsistent steel, leading to spalling after 10,000 hours. Ours? GCr15 chrome steel, hardened to 58-62 HRC, cages stamped from low-carbon steel. Tolerates misalignment up to 2 degrees without binding.

Procurement managers tell us they chase the lowest MOQ first, then regret the quality hit. We've shipped 30202 bearings to over 50 countries since 2020, learning that US buyers prioritize ABEC-1 precision and RoHS compliance upfront.

Dynamic load? 15.8 kN. Static? 13.5 kN. Reference speed 12,000 rpm, but in practice, oil-lubed setups push 8-10k comfortably. Calculate your needs with the formula: required life = (C/P)^3 * 10^6 revolutions, where C is basic dynamic rating.

We've consulted on swaps from 30202 to angular contacts when pure axial dominated, but for most industrial gigs, this taper wins on cost-per-hour.

Procurement Risks Importers Face with 30202 Bearings

I've fielded calls from operations managers in Texas after their Alibaba 30202s seized in week three. Root cause? Oversized rollers or poor cone-cup fits. Dimensional jumps beyond ISO 6 tolerances chew up shafts fast.

Another trap: ignoring preload. Tapered rollers need exact axial play—too loose, and you get fretting; too tight, brinelling under shock loads. We've measured rejects from competitors showing 0.05mm deviations that kill life expectancy.

Lead times kill projects too. Spot-market 30202s? 12 weeks from obscure factories. We stock 50,000 pcs monthly, shipping samples in 48 hours. No excuses for delays on rebuilds.

Counterfeits flood eBay. Fake SKF or Timken stamps on subpar steel. Test hardness—anything under 58 HRC fails early. Our certs? ISO 9001, full traceability from melt to pack.

Logistics risk: ocean freight consolidates, but LCL hides damage. We've optimized palletizing—30202s nested in foam sleeves, 500 per carton, surviving 40ft containers to LA ports intact.

ROI tip: Factor total cost. A $2.50 30202 might last 20,000 hours; our $3.20 unit hits 35,000. Importers report 40% fewer changeouts after switching.

Technical Specs: 30202 Bearing Dimensions and Ratings

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These aren't pulled from thin air. Matched our German-imported grinders. Tolerances? P0 standard, upgradable to P6. Cone angle 10 degrees for thrust handling.

Compare to 30203—same series, but bigger footprint. 30202 fits tight spaces, like small pumps or winches.

Applications Where 30202 Bearings Excel

• Automotive: Front axles on light trucks, where radial loads mix with cornering thrust.
• Industrial: Conveyor idlers, resisting belt tension and debris.
• Agriculture: Combine harvester wheels—mud, shock, variable speeds.
• Material Handling: Forklift masts, supporting tilt and lift cycles.
• Machine Tools: Spindle supports in compact lathes.

One US client retrofitted 30202s into their packaging line. Dropped vibration by half, extended MTBF from 18 to 32 months. No magic—just proper taper geometry absorbing misalignment.

Warning: Not for high-speed vacuums. Pair with 32202 if speeds top 15k rpm.

YIDI Motion Factory: Why Trust Our 30202 Bearings

Shijiazhuang-based, 100 staff strong. 30% senior techs from state mills. Imported Japanese CNC grinders, German heat furnaces. Output? 100k bearings monthly, 30202 among top sellers.

OEM/ODM? Full run. Custom cages, logos, even hybrid ceramic upgrades. Exported to USA, Germany, Japan—50+ markets. Certifications: ISO 9001:2015, RoHS, REACH.

One-Stop Linear Motion: Pair your 30202 with our ball screws or linear guides for complete assemblies. Saves importers sourcing headaches.

Contact: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China. Phone +86 18134111662. Email adam@yidimotion.com. Visit yidibearings.com/contactus.html.

Our edge? Traceability. Every 30202 batch laser-etched with lot code. Recall? Never needed one.

What Buyers Say About Our 30202 Bearings

Shipping 30202 Bearings from China to USA

FOB Tianjin port standard. 20ft container holds 40k pcs—anti-rust oiled, vacuum bagged. Transit: 25-35 days to West Coast.

Duties? HS 8482.20, around 4.5% US import. We handle docs: CO, packing list, fumigation if needed.

Samples? DHL 3-5 days, $50 freight. Bulk MOQ 100 pcs, scales down for tests.

Pro tip: Consolidate with linear modules for full loads. Cuts per-unit freight 30%.

Buyer Guide: Installation and Maintenance

Install dry first. Heat cup to 80C, press cone with arbor tool. Set endplay 0.05-0.10mm via shim. Grease with lithium complex, NLGI 2.

Maintenance: Check for spalling every 500 hours. Relube quarterly in dusty ops.

Common mistake: Over-torquing locknut. Hits 20-30 Nm max for M12 shafts.

Frequently Asked Questions on 30202 Bearings

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Call: +86 18134111662 | Email: adam@yidimotion.com

HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. | YIDI Motion | Shijiazhuang, China

By Adam Li, Export Director | 15+ years in bearing trade